foo.cc: In function ‘int main()’:
foo.cc:18:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   18 |         for (i=1;i<=n;i++)
      |         ^~~
foo.cc:20:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   20 |                 cout<<endl;
      |                 ^~~~
foo.cc:7:25: warning: unused variable ‘j’ [-Wunused-variable]
    7 |         int b[1001],n,i,j,m=0,x;
      |                         ^